NL46308C - - Google Patents

Info

Publication number
NL46308C
NL46308C NL46308DA NL46308C NL 46308 C NL46308 C NL 46308C NL 46308D A NL46308D A NL 46308DA NL 46308 C NL46308 C NL 46308C
Authority
NL
Netherlands
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL46308C publication Critical patent/NL46308C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
NL46308D 1935-09-19 NL46308C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN38630D DE665323C (de) 1935-09-19 1935-09-19 Mit Rueckkopplungssperre versehene Gabelschaltung

Publications (1)

Publication Number Publication Date
NL46308C true NL46308C (enrdf_load_stackoverflow)

Family

ID=6540078

Family Applications (1)

Application Number Title Priority Date Filing Date
NL46308D NL46308C (enrdf_load_stackoverflow) 1935-09-19

Country Status (5)

Country Link
US (1) US2129990A (enrdf_load_stackoverflow)
DE (1) DE665323C (enrdf_load_stackoverflow)
FR (1) FR810646A (enrdf_load_stackoverflow)
GB (1) GB463178A (enrdf_load_stackoverflow)
NL (1) NL46308C (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483501A (enrdf_load_stackoverflow) * 1947-03-13
FR1005063A (fr) * 1947-05-29 1952-04-07 Dispositif pour éviter l'effet larsen dans les installations téléphoniques à hautparleur
CH271525A (fr) * 1948-04-21 1950-10-31 Kaelin Pierre Poste pour installation de transmission du son.
US2623949A (en) * 1949-06-08 1952-12-30 Le Teleampliphone Soc Two-way loud-speaker telephone installation
US2694749A (en) * 1950-04-18 1954-11-16 Sepco 45 B D Sebastopol Communication system
US2629024A (en) * 1950-12-29 1953-02-17 Bell Telephone Labor Inc Unbalanced-to-ground two-to-fourwire connection
DE976957C (de) * 1954-10-19 1965-03-11 Manfred Seiffert Einrichtung fuer elektrische Unterwassertelefonie
US3041411A (en) * 1958-06-10 1962-06-26 Donald C Beatty Automatic, circuit-condition-change-responsive, on-off control for loudspeaking telephone and the like
US3065300A (en) * 1958-09-30 1962-11-20 Modern Telephones Great Britai Loudspeaking telephone systems
NL245570A (enrdf_load_stackoverflow) * 1958-12-29
US3189690A (en) * 1960-04-27 1965-06-15 Modern Telephones Great Britai Two-way telephone systems with talk-listen switching
US3075045A (en) * 1960-08-29 1963-01-22 Bell Telephone Labor Inc Speakerphone

Also Published As

Publication number Publication date
GB463178A (en) 1937-03-23
FR810646A (fr) 1937-03-24
DE665323C (de) 1938-09-22
US2129990A (en) 1938-09-13

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